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This paper discusses the operation of a single-stage, isolated, high-frequency ac-link-based single-phase dc–ac converter, suitable for photovoltaic microinverter applications, controlled using phase modulation of the secondary-side cycloconverter devices. A detailed analysis is presented explaining the impact of prominent circuit nonidealities such as device capacitance and transformer leakage inductance...
This paper presents comprehensive analysis of a single-stage, isolated, high-frequency ac link based dc-ac converter suitable for PV microinverter applications controlled using phase modulation of the cycloconverter devices (secondary side modulation). A flyback-based regenerative clamp circuit is used for mitigating voltage-spikes on the secondary devices arising due to leakage inductance induced...
This paper proposes a novel hybrid PWM-resonant isolated boost converter which has a low filter capacitance requirement owing to the two-stepped current waveform driving the output capacitor. An auxiliary circuit comprising of two switches and a parallel LC network is used to achieve zero-voltage-switching (ZVS) operation of the main MOSFETs. Evolution of the topology and basic circuit operation with...
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